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2026-05-05 - 08:35
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Tue May 05, 2026 01:01:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3601699214209,3cyclictest0-21swapper/023:55:160
3601699214209,3cyclictest0-21swapper/023:55:160
3601699214209,3cyclictest0-21swapper/023:55:160
3601699214209,3cyclictest0-21swapper/023:55:150
3605899212209,2cyclictest0-21swapper/3500:05:2629
3605899212209,2cyclictest0-21swapper/3500:05:2629
3602299211200,9cyclictest0-21swapper/521:18:2735
3602299211200,9cyclictest0-21swapper/521:18:2635
3604999205201,2cyclictest0-21swapper/2821:13:3421
3604999205201,2cyclictest0-21swapper/2821:13:3321
3604999205201,2cyclictest0-21swapper/2821:13:3321
3603899203193,8cyclictest0-21swapper/1922:27:4511
3603899203193,8cyclictest0-21swapper/1922:27:4411
3606099201186,12cyclictest0-21swapper/3721:42:2731
3606099201186,12cyclictest0-21swapper/3721:42:2731
3602099201187,9cyclictest0-21swapper/321:13:2823
3602099201187,9cyclictest0-21swapper/321:13:2823
3602099201187,9cyclictest0-21swapper/321:13:2723
3602799200177,5cyclictest0-21swapper/923:13:1439
3602799200177,5cyclictest0-21swapper/923:13:1339
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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